Solar roof
Solar roof is a suitcase word made up of the Latin sol for sun , the indefinite number ar for a lot and the roof .
It usually refers to a photovoltaic system , in -roof system was implemented. In addition, it can also refer to the thermal solar systems that are used for hot water production and reduce the energy budget, especially in low-energy houses - in a combination of insulation and solar roof with photovoltaics and solar thermal energy, self-sufficient zero-energy houses can be built. Therefore, technologies for solar roofs are in the special focus of politics, which has promoted this roof use through funding in the 1,000 roofs photovoltaic program and later 100,000 roofs program .
Cadastral programs are currently running in which the municipalities examine the suitability of the roofs in their area and the results are made available to the citizens - after a good success in Osnabrück, large cities like Berlin have now also started such roof evaluations, which are made easier by newer computer programs which can calculate the pitched roofs and alignments as well as the shading by ancillary buildings very precisely from the shadows cast on remote sensing (aerial photographs), and thus offer a very precise forecast of the profitability of a solar roof, especially when offset against feed-in according to the Renewable Energy Sources Act .